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Reservoirs for Chemical, Petrochemical, Pharmaceutical and General Industries

Stainless steel pressure vessels (with or without internal cooling coil) designed for general industry applications. These reservoirs provide buffer/barrier fluid to a dual-seal arrangement.

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  • California Residents: PROPOSITION 65 WARNING
  • Stainless steel or carbon steel pressure reservoir with flat heads — without internal cooling coil (GR-3), with internal cooling coil (GR-3C)
  • Can be configured with nitrogen isolation valve (for pressurized seals) or orifice union (for unpressurized seals)
  • Compatible with variable barrier/buffer fluid types
  • Available with a comprehensive range of standard options
  • Electrical instruments suitable for Eexi circuits or Eexd (ATEX)and Explosion Proof (UL/CSA)
  • CE mark in accordance with Pressure Equipment Directive (PED) 97/23/CE provided to countries within the European Community
  • Welding in accordance with ASME VIII (welders qualified to ASME IX)


Standard Materials

Reservoir: Carbon Steel or 316/L Stainless Steel

Level gauge: Carbon Steel cover, Carbon Steel or 316/L Stainless Steel wetted parts, depending on reservoir material

Tube and fittings: 316/L Stainless Steel

Cooling coil (GR-3C only): 316/L Stainless Steel

Pressure Limits

Stainless Steel vessel: 1055 psi(g)/73 bar(g)

Carbon Steel vessel: 902 psi(g)/62 bar(g)


3 US gallons/11.3 liters

5 US gallons/18.9 liters

Recommended Applications

  • Process pumps
  • Other rotating equipment
Similar Products
GR1/1C GR1/1C
GR2/2C GR2/2C

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